EP1733385B1 - Support d'enregistrement et procede et appareil de reproduction et d'enregistrement de trains de sous-titres textuels - Google Patents

Support d'enregistrement et procede et appareil de reproduction et d'enregistrement de trains de sous-titres textuels Download PDF

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Publication number
EP1733385B1
EP1733385B1 EP05721894A EP05721894A EP1733385B1 EP 1733385 B1 EP1733385 B1 EP 1733385B1 EP 05721894 A EP05721894 A EP 05721894A EP 05721894 A EP05721894 A EP 05721894A EP 1733385 B1 EP1733385 B1 EP 1733385B1
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EP
European Patent Office
Prior art keywords
region
text
data
style
dialogue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP05721894A
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German (de)
English (en)
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EP1733385A2 (fr
Inventor
Kang Soo 107-704 Sibeomdaji Samsung Apt. SEO
Byung Jin 111-204 Chonggu APT. KIM
Jea Yong 205-808 Ssangyong APT. YOO
Si Jung 3-807 Okdong Hyundai APT. NOH
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LG Electronics Inc
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LG Electronics Inc
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Priority to EP09166832A priority Critical patent/EP2113922B1/fr
Publication of EP1733385A2 publication Critical patent/EP1733385A2/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H04N5/7755—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver the recorder being connected to, or coupled with, the antenna of the television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal

Definitions

  • the present invention relates to a recording medium, and more particularly, to a recording medium and method and apparatus for reproducing and recording text subtitle streams.
  • the present invention is suitable for a wide scope of applications, it is particularly suitable for recording the text subtitle stream file within the recording medium and effectively reproducing the recorded text subtitle stream.
  • Optical discs are widely used as an optical recording medium for recording mass data.
  • a new high-density optical recording medium hereinafter referred to as "HD-DVD”
  • HD-DVD high-density optical recording medium
  • BD Blu-ray Disc
  • optical reproducing apparatuses having the Blu-ray Disc (BD) standards applied thereto are also being developed.
  • the Blu-ray Disc (BD) standards are yet to be completed, there have been many difficulties in developing a complete optical reproducing apparatus.
  • the main AV data as well as various data required for a user's convenience, such as subtitle information as the supplementary data related to the main AV data, be provided, but also managing information for reproducing the main data and the subtitle data recorded in the optical disc should be systemized and provided.
  • KR 2003-061 953 (cf. the preamble of the independent claims) relates to a method for generating OSD image to block titles .
  • EP-A-1400 968 relates to a method for playing different types of reproduction mode of disc player according to a user's operation.
  • the present invention is directed to a recording medium and method and apparatus for reproducing and recording text subtitle streams that substantially obviate one or more problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a method of creating a set of style information when recording a text subtitle stream file within the recording medium according to the present invention.
  • Another object of the present invention is to provide a method and apparatus for reproducing a text subtitle stream that can effectively reproduce the above-described text subtitle stream according to the present invention.
  • a recording medium for reproducing text subtitle streams includes a data area storing at least one text subtitle stream, each text subtitle stream including a dialog style segment defining a set of region styles and at least one dialog presentation segment, each dialog presentation segment containing at least one region of dialog text, each region of dialog text being linked to one of the set of region styles and including at least one pair of an inline style and a text string, the inline style being configured to change one of region presentation properties specified by the linked region style for the text string.
  • the each region of dialog text may include a data type field which indicates that data immediately following the data type field represent the text string, and the each region of dialog text may include an escape code immediately preceding the data type field so as to distinguish the data representing the text string from data preceding the escape code. Additionally, the each region of dialog text may include a data type field which indicates that data immediately following the data type field represent the inline style.
  • each region of dialog text may include an escape code immediately preceding the data type field so as to distinguish the data representing the inline style from data preceding the escape code.
  • the data type field may further indicate a type of the inline style.
  • the each region of dialog text may include a line-break field indicating that the text string is drawn in a new line, and the each region of dialog text may also include an end-of-inline-style field indicating that the inline style is reset to the region presentation properties specified by the linked region style.
  • a method of reproducing text subtitle streams includes reproducing at least one text subtitle stream recorded on a recording medium, each text subtitle stream including a dialog style segment defining a set of region styles and at least one dialog presentation segment, each dialog presentation segment containing at least one region of dialog text, each region of dialog text being linked to one of the set of region styles and including at least one pair of an inline style and a text string, the inline style being configured to change one of region presentation properties specified by the linked region style for the text string.
  • an apparatus for reproducing text subtitle streams includes a driver configured to drive an optical reproducing device to reproduce data recorded on a recording medium, and a controller configured to control the driver to reproduce at least one text subtitle stream recorded on the recording medium, each text subtitle stream including a dialog style segment defining a set of region styles and at least one dialog presentation segment, each dialog presentation segment containing at least one region of dialog text, each region of dialog text being linked to one of the set of region styles and including at least one pair of an inline style and a text string, the inline style being configured to change one of region presentation properties specified by the linked region style for the text string.
  • a method for recording text subtitle streams includes recording at least one text subtitle stream on a recording medium, each text subtitle stream including a dialog style segment defining a set of region styles and at least one dialog presentation segment, each dialog presentation segment containing at least one region of dialog text, each region of dialog text being linked to one of the set of region styles and including at least one pair of an inline style and a text string, the inline style being configured to change one of region presentation properties specified by the linked region style for the text string.
  • an apparatus for recording text subtitle streams includes a driver configured to drive an optical recording device to record data on a recording medium, and a controller configured to control the driver to record at least one text subtitle stream on the recording medium, each text subtitle stream including a dialog style segment defining a set of region styles and at least one dialog presentation segment, each dialog presentation segment containing at least one region of dialog text, each region of dialog text being linked to one of the set of region styles and including at least one pair of an inline style and a text string, the inline style being configured to change one of region presentation properties specified by the linked region style for the text string.
  • recording medium refers to all types of medium that can record data and broadly includes all types of medium regardless of the recording method, such as an optical disc, a magnetic tape, and so on.
  • optical disc and, more specifically, the “Blu-ray disc (BD)" will be given as an example of the recording medium proposed herein.
  • main data represent audio/video (AV) data that belong to a title (e.g., a movie title) recorded in an optical disc by an author.
  • the AV data are recorded in MPEG2 format and are often called AV streams or main AV streams.
  • supplementary data represent all other data required for reproducing the main data, examples of which are text subtitle streams, interactive graphic streams, presentation graphic streams, and supplementary audio streams (e.g., for a browsable slideshow). These supplementary data streams may be recorded in MPEG2 format or in any other data format.
  • a "subtitle” represents caption information corresponding to video (image) data being reproduced, and it may be represented in a predetermined language. For example, when a user selects an option for viewing one of a plurality of subtitles represented in various languages while viewing images on a display screen, the caption information corresponding to the selected subtitle is displayed on a predetermined portion of the display screen. If the displayed caption information is text data (e.g., characters), the selected subtitle is often called a "text subtitle".
  • a plurality of text subtitle streams in MPEG2 format may be recorded in an optical disc, and they may exist as a plurality of independent stream files. Each "text subtitle stream file" is created and recorded within an optical disc.
  • the purpose of the present invention is to provide a method and apparatus for reproducing the recorded text subtitle stream file.
  • FIG. 1 illustrates a file structure of the data files recorded in a Blu-ray disc (hereinafter referred to as "BD") according to the present invention.
  • BD Blu-ray disc
  • FIG. 1 at least one BD directory (BDMV) is included in a root directory (root).
  • Each BD directory includes an index file (index.bdmv) and an object file (MovieObject.bdmv), which are used for interacting with one or more users.
  • the index file may contain data representing an index table having a plurality of selectable menus and movie titles.
  • Each BD directory further includes four file directories that include audio/video (AV) data to be reproduced and various data required for reproduction of the AV data.
  • AV audio/video
  • the file directories included in each BD directory are a stream directory (STREAM), a clip information directory (CLIPINF), a playlist directory (PLAYLIST), and an auxiliary data directory (AUX DATA).
  • the stream directory (STREAM) includes audio/video (AV) stream files having a particular data format.
  • the AV stream files may be in the form of MPEG2 transport packets and be named as "*.m2ts", as shown in FIG. 1 .
  • the stream directory may further include one or more text subtitle stream files, where each text subtitle stream file includes text (e.g., characters) data for a text subtitle represented in a particular language and reproduction control information of the text data.
  • the text subtitle stream files exist as independent stream files within the stream directory and may be named as "*.m2ts" or "*.txtst”, as shown in FIG. 1 .
  • An AV stream file or text subtitle stream file included in the stream directory is often called a clip stream file.
  • the clip information directory includes clip information files that correspond to the stream files (AV or text subtitle) included in the stream directory, respectively.
  • Each clip information file contains property and reproduction timing information of a corresponding stream file.
  • a clip information file may include mapping information, in which presentation time stamps (PTS) and source packet numbers (SPN) are in a one-to-one correspondence and are mapped by an entry point map (EPM), depending upon the clip type.
  • PTS presentation time stamps
  • SPN source packet numbers
  • EPM entry point map
  • a particular location of a stream file may be determined from a set of timing information (In-Time and Out-Time) provided by a PlayItem or SubPlayItem, which will be discussed later in more details.
  • each pair of a stream file and its corresponding clip information file is designated as a clip.
  • 01000.clpi included in CLIPINF includes property and reproduction timing information of 01000.m2ts included in STREAM, and 01000.clpi and 01000.m2ts form a clip.
  • the playlist directory includes one or more PlayList files (*.mpls), where each PlayList file includes at least one PlayItem that designates at least one main AV clip and the reproduction time of the main AV clip. More specifically, a PlayItem contains information designating In-Time and Out-Time, which represent reproduction begin and end times for a main AV clip designated by Clip_Information_File_Name within the Playltem. Therefore, a PlayList file represents the basic reproduction control information for one or more main AV clips. In addition, the PlayList file may further include a SubPlayItem, which represents the basic, reproduction control information for a text subtitle stream file.
  • the main function of a SubPlayItem is to control reproduction of one or more text subtitle stream files.
  • auxiliary data directory may include supplementary data stream files, examples of which are font files (e.g., aaaaa.font or aaaaa.otf), pop-up menu files (not shown), and sound files (e.g., Sound.bdmv) for generating click sound.
  • font files e.g., aaaaa.font or aaaaa.otf
  • pop-up menu files not shown
  • sound files e.g., Sound.bdmv
  • FIG. 2 illustrates data storage areas of an optical disc according to the present invention.
  • the optical disc includes a file system information area occupying the inmost portion of the disc volume, a stream area occupying the outmost portion of the disc volume, and a database area occupied between the file system information area and the stream area.
  • system information for managing the entire data files shown in FIG. 1 is stored.
  • main data and supplementary data i.e., AV streams and one or more text subtitle streams
  • the main data may include audio data, video data, and graphic data.
  • the supplementary data i.e., the text subtitle
  • the general files, PlayList files, and clip information files shown in FIG. 1 are stored in the database area of the disc volume.
  • the general files include an index file and an object file
  • the PlayList files and clip information files include information required to reproduce the AV streams and the text subtitle streams stored in the stream area.
  • a user is able to select a specific playback mode and to reproduce the main AV and text subtitle streams in the selected playback mode.
  • FIG. 3 illustrates a text subtitle and a main image presented on a display screen according to the present invention.
  • the main image and the text subtitle are simultaneously displayed on the display screen when a main AV stream and a corresponding text subtitle stream are reproduced in synchronization.
  • FIG. 4 is a schematic diagram illustrating reproduction control of a main AV clip and text subtitle clips according to the present invention.
  • a PlayList file includes at least one PlayItem controlling reproduction of at least one main AV clip and a SubPlayltem controlling reproduction of a plurality of text subtitle clips.
  • One of text subtitle clip 1 and text subtitle clip 2, shown in FIG. 4 for English and Korean text subtitles may be synchronized with the main AV clip such that a main image and a corresponding text subtitle are displayed on a display screen simultaneously at a particular presentation time.
  • display control information e.g., position and size information
  • presentation time information examples of which are illustrated in FIG. 5A to FIG. 5C , are required.
  • FIG. 5A illustrates a dialog presented on a display screen according to the present invention.
  • a dialog represents entire text subtitle data displayed on a display screen during a given presentation time.
  • presentation times of the dialog may be represented in presentation time stamps (PTS).
  • PTS presentation time stamps
  • presentation of the dialog shown in FIG. 5A starts at PTS (k) and ends at PTS (k+1). Therefore, the dialog shown in FIG. 5A represents an entire unit of text subtitle data which are displayed on the display screen between PTS (k) and PTS (k+1).
  • a dialog includes a maximum of 100 character codes in one text subtitle..
  • FIG. 5B illustrates regions of a dialog according to the present invention.
  • a region represents a divided portion of text subtitle data (dialog) displayed on a display screen during a given presentation time.
  • a dialog includes at least one region, and each region may include at least one line of subtitle text.
  • the entire text subtitle data representing a region may be displayed on the display screen according to a region style (global style) assigned to the region.
  • the maximum number of regions included in a dialog should be determined based on a desired decoding rate of the subtitle data because the greater number of regions generally results in a lower decoding ratio. For example, the maximum number of regions for a dialog may be limited to two in order to achieve a reasonably high decoding rate.
  • FIG. 5C illustrates style information for regions of a dialog according to the present invention.
  • Style information represents information defining properties required for displaying at least a portion of a region included in a dialog. Some of the examples of the style information are position, region size, background color, text alignment, text flow information, and many others.
  • the style information may be classified into region style information (global style information) and inline style information (local style information).
  • Region style information defines a region style (global style) which is applied to an entire region of a dialog.
  • the region style information may contain at least one of a region position, region size, font color, background color, text flow, text alignment, line space, font name, font style, and font size of the region.
  • region style information may contain at least one of a region position, region size, font color, background color, text flow, text alignment, line space, font name, font style, and font size of the region.
  • two different region styles are applied to region 1 and region 2, as shown in FIG. 5C .
  • a region style with position 1, size 1, and blue background color is applied to Region 1
  • a different region style with position 2, size 2, and red background color is applied to Region 2.
  • inline style information defines an inline style (local style) which is applied to a particular portion of text strings included in a region.
  • the inline style information may contain at least one of a font type, font size, font style, and font color.
  • the particular portion of text strings may be an entire text line within a region or a particular portion of the text line.
  • a particular inline style is applied to the text portion "mountain" included in Region 1.
  • at least one of the font type, font size, font style, and font color of the particular portion of text strings is different from the remaining portion of the text strings within Region 1.
  • FIG. 6 illustrates a text subtitle stream file (e.g., 10001 .m2ts shown in FIG. 1 ) according to the present invention.
  • TP transport packets
  • PID packet identifier
  • each sub-set of transport packets form a packet elementary stream (PES) packet.
  • PES packet elementary stream
  • One of the PES packets shown in FIG. 6 corresponds to a dialog style segment (DSS) defining a group of region styles. All the remaining PES packets after the second PES packet correspond to dialog presentation segments (DPSs)
  • each of the dialog information shown in FIGs. 5A to 5C represent a dialog presentation segment (DPS).
  • the style information included in the dialog information represents a set of information that links any one of the plurality of region style sets defined in the dialog style segment (DSS), which can also be referred to as "region_style_id", and inline styles.
  • DSS dialog style segment
  • a standardized limited number of region style sets is recorded in the dialog style segment (DSS). For example, a maximum of 60 sets of specific style information is recorded, each of which is described by a region_style_id.
  • FIG. 7 illustrates structures of the dialog style segment (DSS) recorded in the text subtitle stream, and of the dialog presentation segment (DPS). Accordingly, a detailed syntax of the text subtitle stream will be described in a later process with reference to FIG. 8 .
  • the dialog style segment (DSS) includes a maximum of 60 sets of region style is recorded therein, each of which is described by a region_style_id.
  • a region style set, which includes diverse region style information, and a user changeable style set are recorded in each region_style_id.
  • FIG. 9B detailed contents of the user changeable style information will be described in FIG. 9C .
  • the dialog presentation segment includes text data and timing information indicating the presentation time of the text data (i.e., PTS set).
  • the style information being linked by the region_style_id is identically applied to all of the text data within the corresponding region (i.e., global style information).
  • the inline style information which is a set of local style information being applied only to the corresponding text string, is newly defined and applied when the style information of a specific text string within the text data is to be modified.
  • FIG. 8 illustrates a syntax of the text subtitle stream (Text_subtitle_stream( )) according to the present invention.
  • the Text_subtitle_stream( ) includes a dialog_style_segment( ) syntax and a dialog_presentation_segment( ) syntax.
  • dialog_style_segment( ) syntax corresponds to a single dialog style segment (DSS) defining the style information set
  • dialog_presentation_segment( ) syntax corresponds to a plurality of dialog presentation segments (DPS) having the actual dialog information recorded therein.
  • FIGs. 9A to 9C illustrate a detailed structure of the dialog_style_segment( ), which represent the dialog style segment (DSS). More specifically, FIG. 9A illustrates the overall structure of the dialog_style_segment(), wherein a dialog_style set( ) defining diverse style information sets that are applied in the dialog is defined.
  • FIG. 9B illustrates a dialog_Style set( ) according to the present invention, which is defined in the dialog_style_segment( ).
  • the dialog_style_set( ) includes a Player_style_flag, a user_changeable_style set( ), and a palette( ).
  • the Player_style_flag indicates whether change in style information by the player is authorized.
  • the user_changeable_style set( ) defines the range of change in style information by the player, and the palette( ) indicates color information.
  • the region style information represents Global style information defined for each region, as described above.
  • a region_style_id is assigned to each region, and a style information set corresponding to the specific region_style_id is defined. Therefore, when reproducing a dialog by recording the region_style_id, which is applied to the corresponding dialog, within the dialog presentation segment (DPS), style information set values defined by identical region_style_id within the dialog_style set( ) are applied, so as to reproduce the dialog. Accordingly, individual style information included in the style information set provided to each region_style_id will now be described.
  • region_horizontal_position, region_vertical_position, region_width, and region_height are provided as information for defining the position and size of a corresponding region within the screen.
  • region_bg_color_index information deciding a background color of the corresponding region is also provided.
  • a text_horizontal_position and a text_vertical_position are provided as information defining an original (or starting) position of the text within the corresponding region.
  • a text_flow defining the direction of the text e.g., left ⁇ right, right ⁇ left, up ⁇ down
  • a text_alignment defining the alignment direction of the text (e.g., left, center, right) are provided. More specifically, when a plurality of regions are included in a specific dialog, the text_flow of each region included in the corresponding dialog is defined to have an identical text_flow value, so as to prevent users from viewing disturbed images.
  • a line_space designating space between each line within the region is provided as individual style information included in the style information set.
  • a font_type, a font-size, and a font_color_index are provided as font information for actual font information.
  • FIG. 9C illustrates the user_changeable_style set( ) according to the present invention, which is defined in dialog_style set( ).
  • the user_changeable_style set( ) pre-defines the types of style information that can be changed by the user and the range of change, and the user_changeable_style set( ) is used for easily changing the style information of the text subtitle data.
  • the style information of only the font_size, the region_horizontal_position, and the region_vertical_position may be changed.
  • each user_style_id includes region_horizontal_position_direction and region_vertical_position_direction information, which designate the direction of the changed position of each of the changeable region_horizontal_position and region_vertical_position.
  • each user_control_style( ) is represented by a different user_style_id, and when the user selects a random user_id_style, an identical order of the user_control_style( ) is applied to all region_style( ).
  • a combination of all changeable styles is defined in a single user_control_style( ). More specifically, the region_position, and the font_size are defined simultaneously, instead of being defined separately.
  • each of the direction (*_direction) and the indication of increase or decrease (*_inc_dec) is recorded independently regardless of each position movement unit (*_delta). More specifically, by defining only the position movement unit (*_delta), a final value of the actually changed style information (or style value) may be obtained by adding the position movement unit (*_delta) to the value defined in the region_style( ).
  • FIG. 9D illustrates palette information (palette( )) according to the present invention, which is defined in the dialog_style set( ).
  • the palette( ) provides color changing information of the text subtitle data recorded within the dialog.
  • the palette( ) includes a plurality of palette_entries, wherein each palette_entry is described by a palette_entry_id. And, each palette_entry is provided with a specific brightness value (Y_value), a specific color value (Cr_value, Cb_value), and a specific T_value, which designates the transparency of the text data.
  • the brightness value (Y_value) is within the range of 16 to 235
  • the color value (Cr-value, Cb_value) is within the range of 16 to 240
  • the T_value is set to have a default value of '0'. Therefore, the disc manufacturer (or Author) records the palette information for each pa!ette_entry_id within the dialog style segment (DSS), wherein the palette information is used in the entire text subtitle stream.
  • DSS dialog style segment
  • FIG. 10 to FIG. 13B illustrate a detailed structure of the dialog_presentation_segment( ), which represent the dialog presentation segment (DPS) according to the present invention.
  • FIG. 10 illustrates the overall structure of the dialog_presentation_segment( ), wherein a dialog_start_PTS and a dialog_end_PTS are defined.
  • the dialog_start_PTS and the dialog_end_PTS designate the presentation time of the corresponding dialog.
  • the dialog_presentation_segment( ) includes a palette_update_flag, which indicates a change of information within the corresponding dialog.
  • the palette( ) information defining the newly changed color is recorded separately.
  • dialog_region( ) that defines the region information is recorded in the dialog _presentation_segment( ).
  • the dialog_region( ) includes region_styte_id information and continuous_present_flag information.
  • the region_style_id information designates any one of the region styles, as shown in FIG. 9B , and the continuous_present_flag information identifies whether to perform a seamless reproduction with the previous dialog region.
  • text data and region_subtitle( ) information are also included in the dialog_region( ). The text data is included in the actual corresponding region, and the region_subtitle( ) information defines the local style information.
  • the region_subtitle( ) consists of a text string and inline style information applied to the text string, which are formed in pairs (or groups). And, the method of recording the region_subtitle( ) according to first, second, and third embodiments of the present invention will now be described in detail with reference to FIG. 11A to FIG. 13B .
  • FIGs. 11A and 11B illustrate an example of recording the region_subtitle( ) according to a first embodiment of the present invention, wherein the region_subtitle( ) includes a text string and a set of identification information (type) for identifying each inline style and applied to the text string. Also, a set of 1-byte information (i.e., escape_code) is recorded between the information being identified by the identification information (type). More specifically, when recording the text string and the inline styles within the region_subtitle( ), the text string and the identification information (type) for identifying each of the inline styles are first provided.
  • the detailed contents that are identified by the type information is identical to that of FIG. 11B .
  • a corresponding font size value is recorded in a specific field (i.e., the inline_style_value( ))
  • the line-break refers to reproduction being performed by changing one line during the decoding of the text subtitle stream, instead of recording supplementary data within the corresponding type information.
  • the end-of-inline-style field indicate that the inline style is reset to the region presentation properties specified by the linked region style.
  • an escape_code being a set of 1-byte information is inserted prior to recording the information being identified by the identification information (or type information).
  • the escape code immediately preceding the identification information distinguish the data representing the inline style from data preceding the escape code. Accordingly, examples of inline styles being applied to a specific text string according to the first embodiment of the present invention will now be described in detail.
  • a single inline style is applied to a specific text string in an order of escape_code ⁇ type (one of 0x02, 0x03, 0x04, and 0x05) + inline_style_data_byte ⁇ escape_code ⁇ type (0x01) + char_data_byte + escape_code ⁇ type (0x0B).
  • escape_code ⁇ type one of 0x02, 0x03, 0x04, and 0x05
  • inline_style_data_byte ⁇ escape_code ⁇ type (0x01) + char_data_byte + escape_code ⁇ type (0x0B)
  • an identical style is applied to all text data within the region by a set of region style information.
  • the inline style is applied until the information indicating the end of the inline style (type (0x0B)) is detected.
  • At least two inline styles are applied to a specific text string in an order of escape_code ⁇ type (one of 0x02, 0x03, 0x04, and 0x05) + inline_style_data_byte ⁇ escape_code ⁇ type (one of 0x02, 0x03, 0x04, and 0x05) + inline_style_data_byte ⁇ escape_code ⁇ type (0x01) + char_data_byte + escape_code ⁇ type (0x0B).
  • the inline styles are consecutively defined and, then, the text string having the inline styles applied thereto is recorded. Therefore, the text string is not recorded between the inline styles.
  • the plurality of inline styles is applied until the information indicating the end of the inline style (type (0x0B)) is detected.
  • FIGs. 12A and 12B illustrate an example of recording the region_subtitle( ) according to a second embodiment of the present invention, wherein the region_subtitle( ) includes a text string and a set of identification information (string_flag) for identifying each inline style and applied to the text string.
  • the inline style is controlled by a set of number information of the inline styles (number_of_inline_style) and a set of inline style type information (inline_style_type). More specifically, in the first embodiment of the present invention, the text string, each inline style, the line-break, and the end of the inline style are all identified by a single set of identification information (type). However, in the second embodiment of the present invention, the text string and the inline styles are first identified by using a set of identification information (string_flag). Thereafter, the inline style is identified by each type by using another set of identification information (inline_style_type).
  • a set of identification information (string_flag) identifying the text string and inline styles are first provided.
  • the inline styles are recorded, however, a set of number_of_inline_styles information is also recorded.
  • the number_of_inline_styles indicates the number of inline_styles included within the corresponding inline_style.
  • a maximum of 6 inline_style_types exists in the present invention, and so, the value of the number_of_inline_styles is within the range of 1 to 6.
  • the inline_style_type may also define another inline _style_type. And, in this case, the maximum value of the number_of_inline_styles must be changed.
  • the at least one inline_style_type included within the inline_styles is consecutively recorded as a single unit. Then, when the recording of the corresponding intine_styte is completed, a set of 1-byte information (i . e ., escape_code) is recorded between the information being identified by the identification information (string_flag).
  • a set of 1-byte information i . e ., escape_code
  • FIGs. 13A and 13B illustrate an example of recording the region_subtitle( ) according to a third embodiment of the present invention, wherein the region_subtitle( ) includes a text string and a set of identification information (data_type) for identifying each inline style and applied to the text string.
  • the inline style in controlled by an overall size value (i.e., inline_style_length) a set of 1-byte information (i.e., escape_code) is recorded between the information being identified by the identification information (data_type).
  • a set of identification information (data_type) identifying the text string and inline styles are first provided.
  • the inline styles are recorded, however, a set of inline_style_length information is also recorded.
  • the inline_style_length indicates an overall size of the corresponding inline style.
  • each of the corresponding size (length) includes an inline_style_type and an inline_style_data_byte, which records information for each type. Therefore, the at least one inline_style_type included within the inline_styles is consecutively recorded as a single unit. Then, when the recording of the corresponding inline_style is completed, a set of 1-byte information (i.e., escape_code) is recorded between the information being identified by the identification information (data_type).
  • FIG. 14 illustrates a detailed view of an optical recording and/or reproducing apparatus 10 according to the present invention, including the reproduction of the text subtitle data.
  • the optical recording and/or reproducing apparatus 10 basically includes a pick-up unit 11 for reproducing main data, text subtitle stream and corresponding reproduction control information recorded on the optical disc, a servo 14 controlling the operations of the pick-up unit 11, a signal processor 13 either recovering the reproduction signal received from the pick-up unit 11 to a desired signal value, or modulating a signal to be recorded to an optical disc recordable signal and transmitting the modulated signal, and a microcomputer 16 controlling the above operations.
  • an AV decoder and text subtitle (Text ST) decoder 17 performs final decoding of output data depending upon the controls of the controller 12. And, in order to perform the function of recording a signal on the optical disc, an AV encoder 18 converts an input signal into a signal of a specific format (e.g., an MPEG-2 transport stream) depending upon the controls of the controller 12 and, then, provides the converted signal to the signal processor 13. Accordingly, the AV decoder and text subtitle (Text ST) decoder 17 is included in the present invention as a single decoder, for simplicity of the description. However, it is apparent that only the text subtitle (Text ST) decoder can be independently included as an element of the present invention.
  • a specific format e.g., an MPEG-2 transport stream
  • a buffer 18 is used for preloading and storing the text subtitle stream in advance, in order to decode the text subtitle stream according to the present invention.
  • the controller 12 controls the operations of the optical recording and/or reproducing apparatus. And, when the user inputs command requesting a text subtitle of a specific language to be displayed. Then, the corresponding text subtitle stream is preloaded and stored in the buffer 18. Subsequently, among the text subtitle stream data that is preloaded and stored in the buffer 18, the controller 12 refers to the above-described dialog information, region information, style information, and so on, and controls the text subtitle decoder 17 so that the actual text data are displayed with a specific size and at a specific position on the screen.
  • the text subtitle decoder 17 decodes the dialog presentation segments (DPS) recorded in the text subtitle stream, which is preloaded within the buffer 18.
  • the text subtitle stream is reproduced by using the specific region style information within the above-described dialog presentation segment (DPS), which is designated by the region_style_id recorded in the dialog presentation segment (DPS), and also by using the inline_styles applied to the specific text string recorded within the dialog presentation segment (DPS).
  • a set of region_styles may be applied to the corresponding text string, instead of the inline_styles.
  • the set of region_styles is applied once again for the reproduction of the text string.
  • Text subtitle stream files may be recorded within the optical disc as standardized information, thereby enabling an efficient reproduction of the recorded text subtitle stream file.

Claims (32)

  1. Support d'enregistrement pour reproduire des trains de sous-titres textuels, le support d'enregistrement comprenant une zone de données stockant au moins un train de sous-titres textuels, chaque train de sous-titres textuels comprenant des informations d'enregistrement en association avec des données enregistrées, le support d'enregistrement comprenant des langues de sous-titres et des langues audio,
    caractérisé en ce que
    le train de sous-titres textuels comprend en outre un segment de style de dialogue (DSS), définissant un ensemble de styles de région qui sont appliqués à toute une région d'un texte de dialogue et au moins un segment de présentation de dialogue (DPS), le segment de présentation de dialogue contenant au moins une région de texte de dialogue, la région de texte de dialogue étant liée à l'un de l'ensemble de styles de région et comprenant au moins une paire d'un style en ligne qui est appliqué à des parties particulières de chaînes de texte incluses dans une région et une chaîne de texte, le style en ligne étant pour changer l'une des propriétés de présentation de région spécifié par le style de région liée pour la chaîne de texte, et
    la région de texte de dialogue comprenant en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent la chaîne de texte.
  2. Support d'enregistrement selon la revendication 1, dans lequel les propriétés de présentation de région spécifiées par les styles de région liée comprennent des propriétés relatives à la police de caractères.
  3. Support d'enregistrement selon la revendication 2, dans lequel les propriétés relatives à la police de caractères comprennent une identification de police de caractères, un style de police de caractères, une taille de police de caractères, et une couleur de police de caractères.
  4. Support d'enregistrement selon la revendication 1, dans lequel chaque région de texte de dialogue comprend en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant la chaîne de texte des données précédant le code d'échappement.
  5. Support d'enregistrement selon la revendication 1, dans lequel chaque région de texte de dialogue comprend en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent le style en ligne.
  6. Support d'enregistrement selon la revendication 5, dans lequel chaque région de texte de dialogue comprend en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant le style en ligne des données précédant le code d'échappement.
  7. Support d'enregistrement selon la revendication 5, dans lequel le champ de type de données indique en outre un type du style en ligne.
  8. Support d'enregistrement selon la revendication 1, dans lequel chaque région de texte de dialogue comprend en outre un premier champ de type de données et un second champ de type de données, le premier champ de type de données indiquant que les premières données suivant immédiatement le premier champ de type de données représentent le style en ligne, le second champ de type de données indiquant que les secondes données suivant immédiatement le second champ de type de données représentent la chaîne de texte.
  9. Support d'enregistrement selon la revendication 8, dans lequel chaque région de texte de dialogue comprend en outre un premier code d'échappement et un second code d'échappement, le premier code d'échappement précédant immédiatement le premier champ de type de données de manière à distinguer les premières données des données précédant le code d'échappement, le second code d'échappement précédant immédiatement le second champ de type de données de manière à distinguer les secondes données des données précédant le code d'échappement.
  10. Support d'enregistrement selon la revendication 8, dans lequel le premier champ de type de données indique en outre un type du style en ligne.
  11. Support d'enregistrement selon la revendication 1, dans lequel chaque région de texte de dialogue comprend en outre un drapeau de chaîne et un champ de type de style en ligne, le drapeau de chaîne indiquant si les données suivant immédiatement le drapeau de chaîne représentent la chaîne de texte, le champ de type de style en ligne indiquant un type du style en ligne.
  12. Support d'enregistrement selon la revendication 1, dans lequel chaque région de texte de dialogue comprend en outre un champ de saut de ligne indiquant que la chaîne de texte est tracée dans une nouvelle ligne.
  13. Support d'enregistrement selon la revendication 1, dans lequel chaque région de texte de dialogue comprend en outre un champ de fin de style en ligne indiquant que le style en ligne est réinitialisé aux propriétés de présentation de région spécifiées par le style de région liée.
  14. Support d'enregistrement selon la revendication 1, dans lequel chaque région de texte comprend au moins une paire d'au moins deux styles en ligne et une chaîne de texte.
  15. Support d'enregistrement selon la revendication 14, dans lequel les données représentant la chaîne de texte suivent les données représentant les au moins deux styles en ligne.
  16. Support d'enregistrement selon la revendication 1, dans lequel l'au moins une région de texte doit être présentée au cours d'un intervalle de présentation prédéterminé.
  17. Procédé de reproduction de trains de sous-titres textuels, le procédé comprenant l'étape consistant à :
    reproduire au moins un train de sous-titres textuels enregistré sur un support d'enregistrement, le train de sous-titres textuels comprenant des informations d'enregistrement en association avec des données enregistrées, le support d'enregistrement comprenant des langues de sous-titres et des langues audio,
    caractérisé en ce que
    le train de sous-titres textuels comprend en outre un segment de style de dialogue (DSS), définissant un ensemble de styles de région qui sont appliqués à toute une région d'un texte de dialogue et au moins un segment de présentation de dialogue (DPS), le segment de présentation de dialogue contenant au moins une région de texte de dialogue, la région de texte de dialogue étant liée à l'un de l'ensemble de styles de région et comprenant au moins une paire d'un style en ligne qui est appliqué à une partie particulière de chaînes de texte incluses dans une région et une chaîne de texte, le style en ligne étant pour changer l'une des propriétés de présentation de région spécifié par le style de région liée pour la chaîne de texte, et
    la région de texte de dialogue comprend en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent la chaîne de texte.
  18. Procédé selon la revendication 17, dans lequel chaque région de texte de dialogue comprend en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant la chaîne de texte des données précédant le code d'échappement.
  19. Procédé selon la revendication 17, dans lequel chaque région de texte de dialogue comprend en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent le style en ligne.
  20. Procédé selon la revendication 19, dans lequel chaque région de texte de dialogue comprend en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant le style en ligne des données précédant le code d'échappement.
  21. Appareil pour reproduire des trains de sous-titres textuels, l'appareil comprenant un capteur (11) configuré pour reproduire des données enregistrées sur un support d'enregistrement, et
    un contrôleur (12) configuré pour commander au capteur (11) de reproduire au moins un train de sous-titres textuels enregistré sur le support d'enregistrement, le train de sous-titres textuels comprenant des informations d'enregistrement en association avec des données enregistrées, le support d'enregistrement comprenant des langues de sous-titres et des langues audio,
    caractérisé en ce que
    le contrôleur (12) est configuré pour commander une reproduction du train de sous-titres textuels comprenant en outre un segment de style de dialogue (DSS), définissant un ensemble de styles de région qui sont appliqués à toute une région d'un texte de dialogue et au moins un segment de présentation de dialogue (DPS), le segment de présentation de dialogue contenant au moins une région de texte de dialogue, la région de texte de dialogue étant liée à l'un de l'ensemble de styles de région et comprenant au moins une paire d'un style en ligne qui est appliqué à une partie particulière de chaînes de texte incluses dans une région et une chaîne de texte, le style en ligne étant pour changer l'une des propriétés de présentation de région spécifié par le style de région liée pour la chaîne de texte, et
    la région de texte de dialogue comprenant en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent la chaîne de texte.
  22. Appareil selon la revendication 21, dans lequel le contrôleur (12) est configuré pour commander la reproduction de chaque région de texte de dialogue comprenant en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant la chaîne de texte des données précédant le code d'échappement.
  23. Appareil selon la revendication 21, dans lequel le contrôleur (12) est configuré pour commander la reproduction de chaque région de texte de dialogue comprenant en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent le style en ligne.
  24. Appareil selon la revendication 23, dans lequel le contrôleur (12) est configuré pour commander la reproduction de chaque région de texte de dialogue comprenant en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant le style en ligne des données précédant le code d'échappement.
  25. Procédé pour enregistrer des trains de sous-titres textuels, le procédé comprenant l'étape consistant à :
    enregistrer au moins un train de sous-titres textuels sur un support d'enregistrement, le train de sous-titres textuels comprenant des informations d'enregistrement en association avec des données enregistrées, le support d'enregistrement comprenant des langues de sous-titres et des langues audio,
    caractérisé en ce que
    le train de sous-titres textuels comprend en outre un segment de style de dialogue (DSS), définissant un ensemble de styles de région qui sont appliqués à toute une région d'un texte de dialogue et au moins un segment de présentation de dialogue (DPS), le segment de présentation de dialogue contenant au moins une région de texte de dialogue, la région de texte de dialogue étant liée à l'un de l'ensemble de styles de région et comprenant au moins une paire d'un style en ligne qui est appliqué à une partie particulière de chaînes de texte incluses dans une région et une chaîne de texte, le style en ligne étant pour changer l'une des propriétés de présentation de région spécifié par le style de région liée pour la chaîne de texte,
    la région de texte de dialogue comprenant en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent la chaîne de texte.
  26. Procédé selon la revendication 25, dans lequel chaque région de texte de dialogue comprend en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant la chaîne de texte des données précédant le code d'échappement.
  27. Procédé selon la revendication 25, dans lequel chaque région de texte de dialogue comprend en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent le style en ligne.
  28. Procédé selon la revendication 27, dans lequel chaque région de texte de dialogue comprend en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant le style en ligne des données précédant le code d'échappement.
  29. Appareil pour enregistrer des trains de sous-titres textuels, l'appareil comprenant:
    un capteur (11) configuré pour enregistrer des données sur un support d'enregistrement, et
    un contrôleur (12) configuré pour commander au capteur (11) d'enregistrer au moins un train de sous-titres textuels sur le support d'enregistrement, le train de sous-titres textuels comprenant des informations d'enregistrement en association avec des données enregistrées, le support d'enregistrement comprenant des langues de sous-titres et des langues audio,
    caractérisé en ce que
    le contrôleur (12) est configuré pour commander un enregistrement du train de sous-titres textuels comprenant en outre un segment de style de dialogue (DSS), définissant un ensemble de styles de région qui sont appliqués à toute une région d'un texte de dialogue et au moins un segment de présentation de dialogue (DPS), le segment de présentation de dialogue contenant au moins une région de texte de dialogue, la région de texte de dialogue étant liée à l'un de l'ensemble de styles de région et comprenant au moins une paire d'un style en ligne qui est appliqué à une partie particulière de chaînes de texte incluses dans une région et une chaîne de texte, le style en ligne étant pour changer l'une des propriétés de présentation de région spécifié par le style de région liée pour la chaîne de texte, et
    la région de texte de dialogue comprenant en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent la chaîne de texte.
  30. Appareil selon la revendication 29, dans lequel le contrôleur (12) est configuré pour commander l'enregistrement de chaque région de texte de dialogue comprenant en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant la chaîne de texte des données précédant le code d'échappement.
  31. Appareil selon la revendication 29, dans lequel le contrôleur (12) est configuré pour commander l'enregistrement de chaque région de texte de dialogue comprenant en outre un champ de type de données qui indique que les données suivant immédiatement le champ de type de données représentent le style en ligne.
  32. Appareil selon la revendication 31, dans lequel le contrôleur (12) est configuré pour commander l'enregistrement de chaque région de texte de dialogue comprenant en outre un code d'échappement précédant immédiatement le champ de type de données de manière à distinguer les données représentant le style en ligne des données précédant le code d'échappement.
EP05721894A 2004-03-26 2005-03-03 Support d'enregistrement et procede et appareil de reproduction et d'enregistrement de trains de sous-titres textuels Active EP1733385B1 (fr)

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US8554053B2 (en) 2013-10-08
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PT1733385E (pt) 2010-01-19
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US20050213940A1 (en) 2005-09-29
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US8326118B2 (en) 2012-12-04
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